Use getVersion method to get app version. (#1858)
Use getVersion method to get app version. (#1858)

* Use getVersion method to get app version.

As it returns same as the version visible on Play Store/App Store.

* Remove  string, as it is not translated.

vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile,vishwesh3/zulip-mobile